\chapter{communication network platform selection}

To construct the community communication network platform, we should consider the ability of the network to provide comprehensive information and information service, the advanced, expansibility, cost performance and the ability of the developer (user) to bear the investment cost.$\dots$\par

\chapter{cell network subsystem composition}

\section{system principle}

The intelligent residential community information transmission network based on HFC is shown in figure 1.$\dots$\par

2.1.1 for home users, the user PC directly connects to CM through 10/100base-t adaptive Ethernet interface, realizing broadband access of 10Mbps upstream and 36Mbps downstream.$\dots$ \par

2.1.2 for small business users.$\dots$ \par
